Sandpapering-machine.



Patented Apr. 29. I902.

F. HOPKINS SANDPAPERING MACHINE.

(Application filed Nov. 11, 1901.)

(No Model.)

Hill

0 6 Z yfi y THE NORRIS PETERS 00.. Pnomumo. wnsumumn. n, c.

UNITED STATES PAT NT Orrron.

FRANK HOPKINS, OF MILESGROVE, PENNSYLVANIA.

SANDPAPERING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 698,501, dated April29, 1902. 1

Application filed November 11,1901; Serial No. 81,885. (NoniOdBl-l Toall whom it may concern.-

Be it known that I, FRANK HOPKINS, a citizen of the United States,residing at Milesgrove, in the county of Erie and State of Pennsylvania,have invented certain new and useful Improvements inSandpapering-Machines; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, forming part of this specification;

My invention relates to improvements in sandpapering-machines, and hasfor its object the construction of a machine adapted to transverselysandpaper and finish the sides of strips of wood passed therethrough;and it consists in the construction and arrangement of the mechanismthereof, substantially as hereinafter set forth and described, andillustrated in the accompanying drawings, in which- Figure 1 is a sideview in elevation of my improved. sandpapering-machine with the side ofthe case broken away. Fig. 2 is a top of plan view of the same with thetop of the case broken away. Fig. 3 is a sectional detail view of aportion of the machine.

In the drawings illustrating my invention, A is a machine-frame. Uponthe top of this frame I mount sand-drums B B, the shaft 1) of the drum Bbeing mounted in adjustable bearings C, and the shaft 1) of the drum Bbeing mounted in adjustable bearings 0, provided with adjusting-screwsD, so that the drum B can be readily moved toward and away from the drumB as desired. At one side of the drums B B, I secure driving-pulleysEand E, and upon the opposite sides of the drums B B, I secure fourblades F, as and for the purpose hereinafter set forth. Upon the lowerpart A of the frame I mount shafts G and G, upon which I secureequal-sized pulleys g g, upon the inner ends of which a cross-beltoperates, H, and from the outer end of the pulley g a belt 72 extends tothe pulley E, and from the outer end of the pulley g a belt h extends tothe pulley E, and on the outer end of the shaft G there is adrivingpulley I, from which a belt I extends to a suitable actuatingpower, (not shown,) by means whereof the mechanism hereinbeforedescribed is driven. On the top of each side of the frame are alsomounted the shafts J J of feed-rollsNN. The shafts J are mounted infixed bearings j j, and the shafts J are mounted in fixed bearings j attheir outer ends and in yielding adjustable bearings at their innerends, as is clearly shown in Fig. 3. These adjustable bearings jpreferably consist of a vertical slotted frame K, in which the bearing jcan be moved up and down by means of the screw K, which is provided witha collar is and a spring 76, by means whereof the bearings j will yieldto pressure in an upward direction. The outer ends of the shafts J J aregeared together by means of equal-sized gears L L, and the shafts J J ateach side of the machine are provided with equal-sized pulleys overwhich a belt M operates to drive all of the shafts J J in unison. I alsoprovide a driving-pulley M on one of the shafts J, from which a belt 'mextends to a suitable actuating-pulley. (Not shown.)

On the inner ends of the shafts J J, I secure removable feed-rolls N N.These rolls are provided with flanges n, which operate 8e not only toguide the sticks placed between the rolls N N and retain them in properre-' lation to the faces of the sand-drums B B, but also operate tocompress and round the sharp corners of sticks passed between them. Tothe frame A, between the feed-rolls N N,

I secure guide-strip n to preventthe ends of the sticks passing betweenthe rolls N N being carried downward by the action of the sand-drumsthereon. Around and inclosing the sand-drums B B, the pulleys E E,fanblades F, pulleys g g, and belts H, h, and h I secure a case "0,which entirely incloses these parts and which case is provided with anoutlet 0, from which a lateral spout P extends and through which thedust produced by the operation of the sand-drums is driven out by theoperation of the fan-blades F.

Having thus described the mechanism of my invention and the operationthereof, so as me to enable others to utilize the same, what I claim asnew, and desire to secure by Letters Patent of the United States, is-

1. In a sandpapering-machine the combi of which rolls is provided with ayielding bearing, and mechanism for driving said feed-rolls in unisonsubstantially as and for the purpose set forth.

3. In a sandpapering-machine, the combination of sand-drums B B,adjustable bearings O for the drum B, fans F and pulleys on the shaft ofeach drum, driving-pulleys g g a cross-belt H and belts h h, flangedfeed- -rol1s N N at each side of the machine, shafts and mechanism fordriving said feed-rolls, adjustable and yielding bearings 3' for theupper of said feed-rolls, a case 0 inclosing the sand-drums and fanmechanism, and a spout P leading therefrom, substantially as and for thepurpose set forth.

and

In testimony whereof I affix my signature 30 in presence of twowitnesses.

' FRANK HOPKINS.

Witnesses:

HAROLD M. STUReEoN, F. A. BLILEY.

